How to disable OST file?

Disable Offline Outlook Data File (.ost)

Most of times user likes to disable a particular OST file may be because the requirement
of that OST file is not there or user no longer uses OST file. So it is better to disable offline outlook data file.
You can follow these simple steps to know how to disable OST file.

This will help you to disable OST file if you have enable working offline mode in Outlook and
has made the settings of outlook to prompt you whether you want to work offline or online then you should change this setting now.
For this you can follow the below mentioned steps:

Click on Tools menu and select Email Accounts option

Choose View or Change Existing email accounts and then click Next » Microsoft Exchange Server and click on change button